RRB GROUP D QUANT QUIZ

Question 1:

In Rajesh's opinion, his weight is greater than $56 \mathrm{~kg}$ but less than $63 \mathrm{~kg} .$ His father does not agree with Rajesh and he thinks that Rajesh's weight is greater than $51 \mathrm{~kg}$ but less than 61 kg. His sister's view that his weight can't be greater than $59 \mathrm{~kg}$. If all of them are correct in their estimation, what is the average of different probable weight of Rajesh?

$57.5 \mathrm{~kg}$

$57.8 \mathrm{~kg}$

$45.5 \mathrm{~kg}$

$60 \mathrm{~kg}$

Question 2:

Price of a bitcoin decreased by $16 \frac{2}{3} \%$ on its initial price on $1^{\text {st }}$ day after lockdown and again decreased by $33 \frac{1}{3} \%$ on 2 nd day and increased by $20 \%$ on third day. If the final price on third day was Rs.32,39,248 then initial price on the $1^{\text {st }}$ day was?

Rs. $42,78,271$

Rs. $48,58,872$

Rs. $52,37,271$

Rs. $52,38,00$

Question 3:

In terms of percentage profit, which of the following transactions is the best?

Cost Price $=60$, Profit $=32$

Cost Price $=80$, Profit $=44$

Cost Price $=50$, Profit $=26$

Cost Price $=70$, Profit $=40$

Question 4:

How to change $10 \%$ into fraction?

$\frac{1}{10}$

$\frac{1}{20}$

$\frac{1}{25}$

$10$

Question 5:

Six bells start ringing at once, then at intervals of $2,4,6,8,10,12$ seconds. How many times will they ring together in 30 minutes?

4

10

15

16

Question 6:

$P$ and $Q$ are two points on the ground on either side of a pole. The angles of elevation of the top of the pole as observed from P and Q are $60^{\circ}$ and $30^{\circ}$ respectively and the distance between them is $84 \sqrt{3} \mathrm{~m}$. What is the height (in $\mathbf{m}$ ) of the pole?

63

60

73.5

52.5

Question 7:

The marked price of a Table is Rs. 1200. After 13.5% discount on the marked price, the selling price of the Table (in rupees) is:

1162

1078

1058

1038

Question 8:

A boy walking at a speed of $10 \mathrm{~km} / \mathrm{hr}$ reaches his school 15 minutes late. Next time he increases his speed $2 \mathrm{~km} / \mathrm{hr}$, but still he is late by 5 minutes. Find the distance of his school from his house.

$8 \mathrm{~km}$

$5 \mathrm{~km}$

$10 \mathrm{~km}$

$15 \mathrm{~km}$

Question 9:

$\int \frac{d \theta}{\sqrt{1+\sin \theta}}=\ldots \ldots$

$\sqrt{2} \log \tan \left(\frac{\pi}{8}+\frac{\theta}{2}\right)$

$\sqrt{3} \log \tan \left(\frac{\pi}{8}+\frac{\theta}{4}\right)$

$\frac{1}{\sqrt{2}} \log \tan \left(\frac{\pi}{8}+\frac{\theta}{4}\right)$

$\sqrt{3} \log \tan \left(\frac{\pi}{8}+\frac{\theta}{6}\right)$

Question 10:

Find the Arithmetic mean of the set of data (7, 2, 6, 9 and 11) -

4

5

6

7